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mpv/player/sub.c
wm4 338004bcfc dvd, bluray, cdda: add demux_disc containing all related hacks
DVD and Bluray (and to some extent cdda) require awful hacks all over
the codebase to make them work. The main reason is that they act like
container, but are entirely implemented on the stream layer. The raw
mpeg data resulting from these streams must be "extended" with the
container-like metadata transported via STREAM_CTRLs. The result were
hacks all over demux.c and some higher-level parts.

Add a "disc" pseudo-demuxer, and move all these hacks and special-cases
to it.
2014-07-05 17:07:15 +02:00

236 lines
7.5 KiB
C

/*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stddef.h>
#include <stdbool.h>
#include <inttypes.h>
#include <math.h>
#include <assert.h>
#include "config.h"
#include "talloc.h"
#include "common/msg.h"
#include "options/options.h"
#include "common/common.h"
#include "stream/stream.h"
#include "sub/dec_sub.h"
#include "demux/demux.h"
#include "video/mp_image.h"
#include "video/decode/dec_video.h"
#include "video/filter/vf.h"
#include "core.h"
void uninit_subs(struct demuxer *demuxer)
{
for (int i = 0; i < demuxer->num_streams; i++) {
struct sh_stream *sh = demuxer->streams[i];
if (sh->sub) {
sub_destroy(sh->sub->dec_sub);
sh->sub->dec_sub = NULL;
}
}
}
// When reading subtitles from a demuxer, and we read video or audio from the
// demuxer, we should not explicitly read subtitle packets. (With external
// subs, we have to.)
static bool is_interleaved(struct MPContext *mpctx, struct track *track)
{
if (track->is_external || !track->demuxer)
return false;
struct demuxer *demuxer = track->demuxer;
for (int t = 0; t < mpctx->num_tracks; t++) {
struct track *other = mpctx->tracks[t];
if (other != track && other->selected && other->demuxer == demuxer &&
(other->type == STREAM_VIDEO || other->type == STREAM_AUDIO))
return true;
}
return false;
}
void reset_subtitles(struct MPContext *mpctx, int order)
{
int obj = order ? OSDTYPE_SUB2 : OSDTYPE_SUB;
if (mpctx->d_sub[order])
sub_reset(mpctx->d_sub[order]);
set_osd_subtitle(mpctx, NULL);
osd_set_text(mpctx->osd, obj, NULL);
}
static void update_subtitle(struct MPContext *mpctx, int order)
{
struct MPOpts *opts = mpctx->opts;
if (order == 0) {
if (!(mpctx->initialized_flags & INITIALIZED_SUB))
return;
} else {
if (!(mpctx->initialized_flags & INITIALIZED_SUB2))
return;
}
struct track *track = mpctx->current_track[order][STREAM_SUB];
struct dec_sub *dec_sub = mpctx->d_sub[order];
assert(track && dec_sub);
int obj = order ? OSDTYPE_SUB2 : OSDTYPE_SUB;
if (mpctx->d_video) {
struct mp_image_params params = mpctx->d_video->vfilter->override_params;
if (params.imgfmt)
sub_control(dec_sub, SD_CTRL_SET_VIDEO_PARAMS, &params);
}
struct osd_sub_state state;
osd_get_sub(mpctx->osd, obj, &state);
state.video_offset = track->under_timeline ? mpctx->video_offset : 0;
osd_set_sub(mpctx->osd, obj, &state);
double refpts_s = mpctx->playback_pts - state.video_offset;
double curpts_s = refpts_s - opts->sub_delay;
if (!track->preloaded && track->stream) {
struct sh_stream *sh_stream = track->stream;
bool interleaved = is_interleaved(mpctx, track);
assert(sh_stream->sub->dec_sub == dec_sub);
while (1) {
if (interleaved && !demux_has_packet(sh_stream))
break;
double subpts_s = demux_get_next_pts(sh_stream);
if (!demux_has_packet(sh_stream))
break;
if (subpts_s > curpts_s) {
MP_DBG(mpctx, "Sub early: c_pts=%5.3f s_pts=%5.3f\n",
curpts_s, subpts_s);
// Libass handled subs can be fed to it in advance
if (!sub_accept_packets_in_advance(dec_sub))
break;
// Try to avoid demuxing whole file at once
if (subpts_s > curpts_s + 1 && !interleaved)
break;
}
struct demux_packet *pkt = demux_read_packet(sh_stream);
MP_DBG(mpctx, "Sub: c_pts=%5.3f s_pts=%5.3f duration=%5.3f len=%d\n",
curpts_s, pkt->pts, pkt->duration, pkt->len);
sub_decode(dec_sub, pkt);
talloc_free(pkt);
}
}
// Handle displaying subtitles on terminal; never done for secondary subs
if (order == 0) {
if (!state.render_bitmap_subs || !mpctx->video_out) {
sub_lock(dec_sub);
set_osd_subtitle(mpctx, sub_get_text(dec_sub, curpts_s));
sub_unlock(dec_sub);
}
} else if (order == 1) {
sub_lock(dec_sub);
osd_set_text(mpctx->osd, obj, sub_get_text(dec_sub, curpts_s));
sub_unlock(dec_sub);
}
}
void update_subtitles(struct MPContext *mpctx)
{
update_subtitle(mpctx, 0);
update_subtitle(mpctx, 1);
}
static void reinit_subdec(struct MPContext *mpctx, struct track *track,
struct dec_sub *dec_sub)
{
if (sub_is_initialized(dec_sub))
return;
struct sh_video *sh_video =
mpctx->d_video ? mpctx->d_video->header->video : NULL;
int w = sh_video ? sh_video->disp_w : 0;
int h = sh_video ? sh_video->disp_h : 0;
float fps = sh_video ? sh_video->fps : 25;
sub_set_video_res(dec_sub, w, h);
sub_set_video_fps(dec_sub, fps);
sub_set_ass_renderer(dec_sub, mpctx->ass_library, mpctx->ass_renderer);
sub_init_from_sh(dec_sub, track->stream);
// Don't do this if the file has video/audio streams. Don't do it even
// if it has only sub streams, because reading packets will change the
// demuxer position.
if (!track->preloaded && track->is_external) {
demux_seek(track->demuxer, 0, SEEK_ABSOLUTE);
track->preloaded = sub_read_all_packets(dec_sub, track->stream);
}
}
void reinit_subs(struct MPContext *mpctx, int order)
{
struct MPOpts *opts = mpctx->opts;
struct track *track = mpctx->current_track[order][STREAM_SUB];
int obj = order ? OSDTYPE_SUB2 : OSDTYPE_SUB;
int init_flag = order ? INITIALIZED_SUB2 : INITIALIZED_SUB;
assert(!(mpctx->initialized_flags & init_flag));
struct sh_stream *sh = init_demux_stream(mpctx, track);
// No track selected, or lazily added DVD track (will actually be created
// on first sub packet)
if (!sh)
return;
if (!sh->sub->dec_sub) {
assert(!mpctx->d_sub[order]);
sh->sub->dec_sub = sub_create(mpctx->global);
}
assert(!mpctx->d_sub[order] || sh->sub->dec_sub == mpctx->d_sub[order]);
// The decoder is kept in the stream header in order to make ordered
// chapters work well.
mpctx->d_sub[order] = sh->sub->dec_sub;
mpctx->initialized_flags |= init_flag;
struct dec_sub *dec_sub = mpctx->d_sub[order];
assert(dec_sub);
reinit_subdec(mpctx, track, dec_sub);
struct osd_sub_state state = {
.dec_sub = dec_sub,
// Decides whether to use OSD path or normal subtitle rendering path.
.render_bitmap_subs = opts->ass_enabled || !sub_has_get_text(dec_sub),
};
// Secondary subs are rendered with the "text" renderer to transform them
// to toptitles.
if (order == 1 && sub_has_get_text(dec_sub))
state.render_bitmap_subs = false;
reset_subtitles(mpctx, order);
osd_set_sub(mpctx->osd, obj, &state);
}